<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script type="text/javascript">
	var xx="hello!"
</script>	
</head>
<body>
<script type="text/javascript">
	var xxxx="ddddd";
	document.write(xx);
	document.write(xxxx);
</script>	
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<script type="text/javascript">
	function write2(){
		alert("de");
		alert(xx+xxxx);
	}
</script>
<form action="sss">
	<input type="button" value="click" id="click" name="click" onclick="javascript:write2();"/>
</form>

</body>
</html>